Difference between revisions of "Initializing Documentation Build Environment"

Revision as of 19:15, 20 October 2021

This page describes the first setup of an build environment for the GnuCash documentation.

Initializing Documentation Build Environment

After installing your version control system, cloning the repository, and installing a build tool like make utility or Ninja, you should initialize the build environment.

Attention

Since GnuCash 4.7 only CMake—which was introduced in GnuCash 3.0—is supported. Before the documentation supported also Autotools.

Note

CMake offers the choice (-G like generator) between many different build tools for the command line or IDEs. To keep it simple, we use make aka "Unix Makefiles" in the examples of this page.

Make a Build Directory Structure and the Makefiles

Create a build directory structure to keep the built documentation files separate from the repository directories. This page assumes the build directory is called build and is a subdirectory of the repository but that does not have to be so. It can be called whatever suits you, and even be wherever it suits you. Some people create it as a subdirectory to the source directory. Others have it in a completely different location, say to have all builds together under one directory. That is a matter of preference.

cd /home/$USER/code/gnucash-docs
mkdir build    # only needed if not previously created
cd build       # configure must be run from the "build" directory

CMake

If your build directory is a subdirectory of your repository

cmake -G"Unix Makefiles" [-DWITH_MOBI=On] ..

Otherwise (depending on where your repository is)

cmake -G"Unix Makefiles" [-DWITH_MOBI=On] /home/$USER/code/gnucash-docs

The cmake command above will recreate the gnucash-docs directory structure under the current directory (build) but without the source files. It then checks whether it can find all the tools and libraries required for successfully generating the documentation and creates the required Makefiles to drive the build system. It can enable or disable certain options in the Makefiles based on its findings.

cmake can also take extra command line options that can alter what it will include in the Makefiles. They are passed in the form -D<option-name>=<option-value>. The most relevant ones for our documentation build system are:

WITH_GHELP

Enable build rules for gnome help document format (default value: ON)

WITH_HTML

Enable build rules for html document format (default value: ON)

WITH_PDF

Enable build rules for pdf document format (default value: ON)

WITH_EPUB

Enable build rules for epub document format (default value: ON)

WITH_CHM

Enable build rules for chm document format (Only available under Windows, default value: OFF)

WITH_MOBI

Enable build rules for Mobipocket document format (default value: OFF)

CMAKE_INSTALL_PREFIX

Defines the final location where the documentation will be installed (default value: /usr/local/bin).

If you intend to test invoking help from GnuCash programs, you should set this path now to save you from having to rerun cmake later. See Test Documentation in Linux.

cmake typically has to be run only once to set up your build environment. Rerunning it again later has no negative side-effect.

And you may want to rerun it to change one of the options mentioned above.

Note

cmake will emit errors if some of the build requirement are not met. You have to resolve these errors and rerun cmake before proceeding to the next step. In addition it may also issue WARNINGs, like the warning the fop is not found and that you will not be able to generate PDF files. Warnings suggest some parts are missing preventing some optional build steps from running. The pdf generation step is such an optional one. It's not required for editing the documentation, though a test build of PDFs should be performed and checked before pushing changes to code. See Other Documentation Formats section of the Documentation Release Process page for more information.